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Which of the following options includes ...

Which of the following options includes biofertilisers ?

A

Cowdung manure and farmyard waste

B

A quick growing crop ploughed back into the field

C

Nostoc, Oscillatoria

D

All of these

Text Solution

Verified by Experts

The correct Answer is:
C
Nostoc and Oscillatoria are nitrogen fixing cyanbacteria. They add organic matter as well as extra nitrogen to the soil. Cyanobacteria are very important and low-cost biofertilisers.
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